"It will not be right just to vaguely make allegations against anyone," Mulayam said during a party programme here.
He, however, refused to give any personal viewpoint over the allegations.
"I cant say anything on it..Allegations have been made, nothing right or wrong has been proved till now," he said.
When asked about Arvind Kejriwal, he said for the activist, everyone into politics is corrupt.
"He think everyone is corrupt. He has not spared anyone. He also accused me of being hand in gloves with Congress. Let him go on till he gets tired," Mulayam said, without taking Kejriwal's name.
"Now he (Kejriwal) is joining politics, let him contest polls and face the reality," he said.
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Asked about Khurshid statement against Kejriwal daring him to come to Farukhabad, Yadav said, "he is upset now, I will not say anything on him."
When asked whether this spree of allegations and counter-allegations was leading the country towards a political crisis, Yadav said a debate had started and it's good.
"I think it will come to some conclusion", he said.
Yadav also released a booklet by a school run by former chief minister ND Tiwari and stressed for following the ideology of the former chief minister.
He also invited Tiwari to come to the state for a stay.